He tells David Letterman that he will not return come fall on tonight’s Late Show .
Via: cbs.com
Dave: And how long will a person continue with this?
Jason: A person in general or me, specifically?
Dave: Whatever you'd like. Either way. Or both.
Jason: Well, a person can go as long as they want. I mean, Lorne's been kicking butt at it for 33 out of the 38 years. But me, yeah, no, I'm definitely done. I'm not coming back in the fall.
Dave: Now do they know that? Have you run this by someone?
Jason: I don't know what kind of ratings you're getting these days, but I would hope someone would tell them after [this airs].
Dave: You should have called first.
Jason: I should have, right?